<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>04.图片</title>
    <link rel="stylesheet" href="bootstrap-4.5.3/css/bootstrap.css">
</head>
<body>

    <!-- 响应式图片  如果容器小于图片的大小 响应 -->
    <!-- style="width:500px;height: 800px;" -->
    <div >
        <img src="images/jz2.jpg" class="img-fluid rounded img-thumbnail" alt="" srcset="">
    </div>
    <ul>
        <li class="text-primary">xxxxx</li>
        <li class="text-success">xxxxx</li>
        <li class="text-danger">xxxxx</li>
        <li class="text-dark">xxxxx</li>
        <li>xxxxx</li>

    </ul>

    <ul>
        <li class="bg-primary">xxxxx</li>
        <li class="bg-success">xxxxx</li>
        <li class="bg-danger">xxxxx</li>
        <li class="bg-dark">xxxxx</li>
        <li>xxxxx</li>

    </ul>

    <button type="button" class="close" >
        <span>&times;</span>
      </button>

      <div class="bg-danger fixed-top ">我是一个导航</div>
    
</body>
</html>